Editorial Martin van Bruinessen Introduction to Special Issue Kurdish: A critical research overview  Geoffrey Haig and Ergin Öpengin Research articles On the linguistic history of Kurdish  Thomas Jügel Regional variation in Kurmanji: A preliminary classification of dialects  Geoffrey Haig and Ergin Öpengin Badini Kurdish modal particles dê and da: procedural semantics and language variation  Christoph Unger Diversity in convergence: Kurdish and Aramaic variation entangled  Paul Noorlander Book reviews Adem Uzun, “Living Freedom”: The Evolution of the Kurdish Conflict in Turkey and the Efforts to Resolve it  Kariane Westrheim and Michael Gunter Ebru Sönmez, Idris-i Bidlisi: Ottoman Kurdistan and Islamic Legitimacy  Yavuz Aykan Sabri Ateş, The Ottoman–Iranian Borderlands: Making a Boundary, 1843-1914  Yener Koç Choman Hardi, Gendered Experiences of Genocide: Anfal Survivors in Kurdistan-Iraq  Jordi Tejel Khanna Omarkhali (ed.), Religious Minorities in Kurdistan: Beyond the Mainstream  Martin van Bruinessen Anna Grabole-Çeliker, Kurdish Life in Contemporary Turkey: Migration, Gender and Ethnic Identity  Joost Jongerden